eference06 eference06

16-09-2020
Mathematics

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|7x| +9=23

Solve the absolute value equation.

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mmc1152 mmc1152

16-09-2020

So you want to get the x variable on its own, so subtract 9 from both sides. Now you have |7x|=14. The absolute value just means the number is positive, so you divide both sides by positive seven and get x=2

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